It will be interesting to see if the recommendation made by the AAIB following the similar Air Lanka A340 incident at LHR in 2012:
"It is recommended that the International Civil Aviation Organization introduce a standard or recommended practice for fixed wing aeroplanes to record the flight management system takeoff performance data entries on the flight data recorder during the takeoff phase. The data should be retained in the operator’s flight data analysis programme."
turns out to be relevant to this investigation.
AFAIK, to date ICAO has not agreed to implement any such measure.